Organization and Significant Accounting Policies - Restricted Stock Unit and Restricted Stock Award Activity (Detail) (Restricted Stock Units and Restricted Stock Awards [Member], USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 28, 2014
Restricted Stock Units and Restricted Stock Awards [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unvested restricted stock units and restricted stock awards, Beginning balance, Number of Shares	1,256,930
Granted, Number of Shares	464,500
Vested, Number of Shares	(407,243)
Forfeited, Number of Shares	(247,522)
Unvested restricted stock units and restricted stock awards, Ending balance, Number of Shares	1,066,665
Vested and expected to vest restricted stock units and restricted stock awards at March 28, 2014, Number of Shares	871,359
Unvested restricted stock units and restricted stock awards, Beginning balance, Aggregate Intrinsic Value	$ 12,632
Unvested restricted stock units and restricted stock awards, Beginning balance, Aggregate Intrinsic Value	12,927
Vested and expected to vest restricted stock units and restricted stock awards at March 28, 2014, Aggregate Intrinsic Value	$ 10,866